Hi,
Just browsing through some old FHB and read an article from 2000. Installing a metal roof. It mentioned about OSB not having the holding power of ply for the screws. Is that still the case?
Mikey
Discussion Forum
Discussion Forum
Up Next
Video Shorts
Featured Story
Listeners write in about insulating an attic roof in a balloon-framed house, sizing a new heat-pump system, attaching extension jambs to a window or exterior door, and more.
Featured Video
Highlights
"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.
Fine Homebuilding Magazine
Fine Home Building
Follow
-
Fine Homebuilding
Dig into cutting-edge approaches and decades of proven solutions with total access to our experts and tradespeople.
Start Free Trial Now -
GBA Prime
Get instant access to the latest developments in green building, research, and reports from the field.
Start Free Trial Now
Replies
Don't know about the holding power but if it's a roof that can rust (tin) you might want to go with 1X6's with 1.5" spacing so the underside can breath.
Runnerguy
That is true.
Re second post - 29ga metal would require solid sheathing supporting it, with tarpaper backup.
1x6 only provides 3/4" air spacing, not 1-1/2" so maybe I misunderstood something
Welcome to the
Taunton University of Knowledge FHB Campus at Breaktime.
where ...
Excellence is its own reward!
i thought of another point - the standard screws provided for screw-down metal roofs has a 1/4" head on a #8 or #10 shank
I always used the 5/16" head x #12 shank. This was to prevent them snapping off, but the greater amt of wod displaced by the larger screw and the more friction of more thread spiraled into the wood means more holding power, so you should use these larger screws if you chose to sheathe with osb
Welcome to the
Taunton University of Knowledge FHB Campus at Breaktime.
where ...
Excellence is its own reward!